Re: Recent changes incorrectly calculate font size within daemon mode

[Michael Heerdegen]

Yuri D'Elia <address@hidden> writes:

> I've updated my current emacs build to discover a new quirk:
>
> - if I start emacs normally, all is good
> - if I start it through emacsclient -c, the screen DPI is not correctly
>   calculated. It looks like my fontconfig/Xres DPI settings are ignored.

Maybe something related: when I use `enlarge-font' from "frame-cmds.el",
I get the error

| Debugger entered--Lisp error: (wrong-type-argument stringp nil)
|   string-to-number(nil)
|   (+ (string-to-number (aref xlfd-fields xlfd-regexp-pixelsize-subnum)) 
increment)
|   (let ((new-size (+ (string-to-number (aref xlfd-fields 
xlfd-regexp-pixelsize-subnum)) increment))) (if (> new-size 0) nil (signal 
'font-too-small (list new-size))) (aset xlfd-fields 
xlfd-regexp-pixelsize-subnum (number-to-string new-size)))
|   (let ((xlfd-fields (x-decompose-font-name fontname))) (if xlfd-fields nil 
(error "Cannot decompose font name")) (let ((new-size (+ (string-to-number 
(aref xlfd-fields xlfd-regexp-pixelsize-subnum)) increment))) (if (> new-size 
0) nil (signal 'font-too-small (list new-size))) (aset xlfd-fields 
xlfd-regexp-pixelsize-subnum (number-to-string new-size))) (aset xlfd-fields 
xlfd-regexp-pointsize-subnum "*") (aset xlfd-fields xlfd-regexp-avgwidth-subnum 
"*") (x-compose-font-name xlfd-fields))
|   frcmds-enlarged-font-name("-PfEd-DejaVu Sans 
Mono-normal-normal-normal-*-*-*-..." #<frame *scratch*      address@hidden 
0x8eb3510> 1)
|   (setq fontname (frcmds-enlarged-font-name fontname frame increment))
|   (let ((fontname (cdr (assq 'font (frame-parameters frame)))) (count 
enlarge-font-tries)) (setq fontname (frcmds-enlarged-font-name fontname frame 
increment)) (while (and (not (x-list-fonts fontname)) (wholenump (setq count 
(1- count)))) (setq fontname (frcmds-enlarged-font-name fontname frame 
increment))) (if (x-list-fonts fontname) nil (error "Cannot change font size")) 
(modify-frame-parameters frame (list (cons 'font fontname))) (if (< 
emacs-major-version 21) (progn (frame-update-faces frame))))
|   enlarge-font(1)

The problem is that (aref xlfd-fields xlfd-regexp-pixelsize-subnum)
returns nil which I guess is not correct.

Resetting to d77d01d22902acdc45c2c7059de4f1b158ab5806 as mentioned in
Yuri's other messages fixes this problem.  I'm not starting Emacs
through emacsclient, though.


HTH,

Michael.